Nonballooning spindle for spinning machines



April 23, 1940.

J. wElNBERGl-:R l 2.198.020.

NONBALLONING SPINDLE FOR SPI'NNING MACHINES Filed May 16. 1938 Patented Apr. 23, 1940 UNITED STATES PATENT OFFICE NONBAILOONING SPINDLE MACHINE Jan Weinberger, Brunn, Czechoslovakia Application May 16, 1938, Serial No. 208,269

s claims. (c1. 57-73) the construction of the spindle is such that yarn or thread delivered from the drawing rollers of the spinning frame and directed through a guide is directly received upon the upper end of the spindle for loose and wide spiral winding thereon in a downward direction for delivery to the traveler which thereafter controls the winding of the yarn onto the tube and operates in the absence of all ballooning activities with substantially all stretching strains on the yarn eliminated and thereby reducing liability of breakage of the yarn.

A further object of the invention is to provide a spindle of the foregoing character wherein the guide through which the yarn passes from the frontrollers of the drawing part of the spinning frame is in close relationship and directly above the spindle which results in an essential reduction of stretching of the yarn between said front rollers and the top of the spindle, with substantially all of the twist imparted to the yarn between said guide and the top of the spindle resulting in the production of a yarn that has a minimum of stretching action, while the amount of twistimparted thereto is variable fromra point below the twist of a normal spinning machine up to an increased twist for the production of a more compact and hard yarn.

A still further object of the invention is to provide a spindle construction for spinning machines with devices associated with the spindle whereby ballooning activity of the yarn is eliminated which permits the utilization of larger rings forming guides for the travelerswhereby a package of increasedsize and more compact winding is produced on a normal spinning ma,

' chine.

More specifically, the invention relates to a particular improvement Qin the construction of the spindle head that is free of all surface or peripheral protuberances or projections `so that a minimum of abutments or obstructions are presented to the yarn when leaving the guide and passing into contact with the head of the spindle,

the gist of this invention residing in the provisionthe channels graduate into lesser depth and nally merge into the cylindrical side wall of the spindle, deiining adjacent their lower ends a convex bottom wall portion in each channel with the yarn received in a channel from the guide engaged by a side wall of the channel which wall prevents the imparting of further twisting action to the yarn, the latter riding out of a channel and into the succeeding channel during rotation of the spindle.

With the above and other objects in View that will become apparent as the nature of the inventio'n is better understood, the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawing and claimed.

In the drawing:

Figure l is a side elevational view of a spinning machine spindle equipped with a novel construction of spindle head with parts of the spinning machine directly associated with the spindle being respectively diagrammatically illustrated and further illustrated in section,

Figure 2 is an enlarged fragmentary side elevational view of the spindle head, showing a longitudinally extending peripheral channel forming a twist-preventing guide for causing the yarnto be widely spirally wound on the tube in the absence of ballooning activity, y

Figure 3 is a top end plan view of the head of the spindle showing the equidistant circumferentially spaced channels in the spindle head, the head being provided with at least one of such channels, three being illustrated, the channels being shown as of greatest depth at the upper terminal end of the spindle head, and

Figure 4 is a cross sectional view taken on line 4 4 of Figure 2, showing the bottom walls of the channels changing from concaved to convex forms in a direction toward the lower ends thereof.

It is known in the prior` art to construct a spindle forspinning machines which eliminates ballooning activities of the yarn being wound thereon, but in such devices the yarn in being delivered from a guide to the head'of the spindle moves into engagement with a multiplicity of projectidns'or protuberances all of which have yarn engagement and thecontact of said projections or protuberances with the yarn has a tendency to roughen surfaces of the yarn by frictional engagement of the projections or protuberances therewith and does not immediately arrest twisting action imparted to the yarn, such devices embodying projections or protuberances only arresting such twisting action of the yarn at a point considerably spaced below the upper terminal end of the spindle and until the yarn begins its spiral winding movement on the spindle.

The present invention embodies a particular construction of spindle head and with which construction the yarn guide' is closely associated, the construction of the spindle head being such that twisting action imparted to the yarn is immediately stopped at the point of contact of the yarn with the spindle head, all twisting action that is imparted to the yarn being in the relatively small zone or space between the yarn guide and the upper terminal end of the spindle, the yarn thereafter being widely spirally wound on the spindle for delivery to the traveler and ultimate winding in the usual manner onto the bobbin tube.

In the accompanying drawing which shows one embodiment of the invention, the spindle I0 is rotatably mounted adjacent its lower end in bearings I I and carries a pulley Wheel I 2 that is driven in the customary manner. The spindle II 'projects upwardly through a ring bar I3 diagrammatically illustrated and into which ring bar the guide ring I4 is suitably set, the traveler I 5 beirg The yarn I6 deguide and the upper terminal end of the spindle may be varied it has been found that best results can be obtained when the distance is approximately one-eighth of an inch. l

The gist of the present invention resides in the particular designing and construction of the spindle head I9 which acts to stop twisting action imparted to the yarn I6 and to eliminate ballooning activity of the yarn by causing the latter to widely spirally wind onto the spindle in a downward direction in its passage to the traveler I5 on the ring Il. The head I9 of the spindle is illustrated as provided with three equidistantly spaced peripheral longitudinally extending notches, grooves or channels, but it is. to be understood that such construction may embody a single channel, each channel designated in general by the reference character 20 comprising side walls 2l that are rounded at the points of mergence with the peripheral surfaces of the spindle head I9 so as to offer a minimum of resistance of movement of the yarn into the succeeding channels 20 during rotation of the spindle. As shown in Figure 3, the greatest depth of the channel is at the point 22 incident to the terminal end of the spindle head I9, while the bottom wall of the channel gradually rises into convex form in a directiontoward the lower end of the channel as shown by the reference character 23 in Figure 4 with said bottom wall nally merging into the peripheral wall of the spindle head I9. By arranging the channels 20 to extend longitudinally of the spindle head and with the side walls 2! of the channels aring outwardly toward their lower ends, it is possible to work the spindle in spinning machinery for clockwise and counter-clockwise rotation.

The yarn i6 as shown in Figure 1 in passing from the stationary guide I8 to the upper end of the spindle head I9 receives all twisting action in the zone or space 24 between the guido I8 and the upper terminal end of the spindle head, the yarn at the moment of its reception in a groove 20 for contact with the side wall 2| of the channel having all twisting action thereto arrested and in view of the smooth or polished surface of the walls of the channel and the rounding of the points of mergence of said side walls into the peripheral surface of the spindle head I9, there are no projections or protuberances present which would tendto mar or roughen the surface of the yarn, the yarn passing successively into and out of the channels during rotation of the spindle for the production of a soft and smooth yarn. The clinging of the yarn to the channeled head of the spindle causes the yarn to be widely spirally wound as shown at I6E onto the head of the spindle I9 below the channels' 20 and onto the tube 25 upon the spindle I0. The wide spiral winding I6 leaves the tube as at I6b for engagement with the traveler I5 and from the traveler the yarn IBc is wound upon the tube 25 as shown at I6d to make the bobbin. The head channels 20 producing the wide spiral windings llia onto the spindle eliminate ballooning activities of the yarn and thereby reduce breakage of the yarn during the winding of the bobbin, which breakage usually occurs in free swinging lengths or balloon yareas of the yarn. `Also, by producing the wide spiral Winding I6a on the spindle and eliminating ballooning activities of the yarn, it is possible to employ a largerring I 4 for the production of a package of yarn of increased size on a normal spinning machine. With the construction of spindle head, it is also possible to lengthen the tube 25 for a package of yarn of increased length and such a package of increased length and diameter permits longer operations of the spinning machinery with less frequent dufiing for the replenishing of tubes as Well as reducing a wastage of yarn ends and improving the operation of the following process, such as weaving and winding. 'I'he head I9 of the spindle is illustrated as forming an integral part of a spindle body, but it is understood that such head may be constructed as a cap or attachment to a spindle of normal construction.

From the above detailed description of the invention, it is believed that the construction and operation thereof will at once be apparent and while there are herein shown and described the preferred embodiments of the invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

I claim:

1. A yarn spinning machine comprising a rotary spindle, a iixed yarn guide centrally disposed above the spindle in proximity thereto with the space between the guide and upper end of the spindle constituting the sole zone in which a twist is imparted to the yarn, and the head of the spindle being constructed and arranged to eliminate ballooning of the yarn and to cause the yarn to widely spirally wind on the spindle prior to the winding of the yarn on the spindle and to arrest twisting of the yarn at the point of contact of the yarn therewith and a traveler for directing the winding of the yarn on the spindle and said spindle head having a series of longitudinally extending circumferentially spaced channels having rounded side walls merging into the peripheral wall of spindle head with the yarn, during rotation of the spindle, successively moving into the channel in the absence of obstructions on the spindle head to eliminate damage or roughening of the yarn and to produce a soft and even yarn, said channels having the deepest portions at the upper terminal end of the spindle head and the bottom walls of the channels gradually inclined outwardly towards their lower ends and preventing convex faces merging into the peripheral face of the spindle head.

2. A yarn spinning machine comprising a rotary spindle, a xed yarn guide centrally disposed above the spindle in proximity thereto with the space between the guide and upper end of the spindle constituting the sole zone in which a twist is imparted to the yarn, and the head of the spindle being constructed and arranged to eliminate ballooning of the yarn and to cause the yarn to widely spirally wind on the spindle prior to the winding of the yarn on the spindle and to arrest twisting of the yarn at the point of contact of the yarn therewith and a traveler for directing the winding of the yarn on the spindle and said spindle head having a series of longitudinally extending crcumferentially spaced channels having rounded side walls merging into the peripheral wall of the spindle head with the yarn, during rotation of the spindle,` successively moving into the channel in the absence of obstructions on the spindle head to eliminate damage or roughening ofthe yarn and to produce a soft and even yarn, and the side walls of the channels flaring outwardly towards their lower ends at their points of mergence with the peripheral face of the head to offer the least resistance to the movement of the yarn into and out of the successive channels.

3. A yarn spinning machine comprising a rotary spindle, a fixedryarn guide centrally disposed above the spindle in proximity thereto with the space between the guide and upper end of the directing the winding f the yarn on the spindle and said spindle head having a series of longitudinally extending circumferentially spaced channels having rounded side walls merging into the peripheral .wall of the spindle head with the yarn, during rotation of the spindle, successively moving into the channel in the absence of obstructions on the spindle head to eliminate damage or roughening of the yarn and to produce a soft and even yarn, `said channels having the deepest portions at the upper terminal end of the spindle head and the bottom walls of the channels gradually inclined outwardly towards their lower ends and presenting convex faces merging into the peripheral face of the spindle head, and the side walls of the channels aring outwardly towards their lowerends at their points of mergence with the peripheral face of the head to offer the least resistance to the movement of the yarn into and out of the successive channels.

JAN WEINBERGER. 

